Time is a precious resource. There is never any of it to spare  during the working day; it zips past at weekends at super speed and  creaks by during meetings and dental appointments at a glacial pace. All  this means there are various online sites and applications that I don't  have time to do anything with; or, if I do have the time, I am in an  Inappropriate Place, like a Coffee Nation franchise (with 20 minutes  wifi only, the tightwads) or on a train.
So I spend a lot of time saving things to my bookmarks with tags like  'must try' or 'to do' or 'looks good' that sit there untouched for,  well, some time. Tonight I inched a couple of steps in the right  direction - I opened my bookmarks and had a sort through. There were  several apps launched as the Next Big Thing that had quietly died  without ever becoming even the Next Little Thing, others than I had just  incorporated into my daily use without conscious effort, and a few that I  have as much chance of ever understanding and using as I do of flying  to the moon. 
But there were also several apps and websites I know I should make the time to try out properly. Some of them look very complicated to set up but I suspect a bit of planing at the outset will, ultimately, be rewarding.
Crowdmap - Real time mapping of  crowd coverage of events/incidents. I signed up ages ago but have done  nothing with it since other than create one map I later deactivated.  Needs a project of some sort and I will have to get my head around what  that might be. The examples on the site are all about disasters and  natural incidents but I had hoped to use it for the Mathew Street  Festival coverage. Events conspired against me on that one but it's  definitely an app for the future.
Amplify - seems to be a cross-posting  content clipper with aggregation, social media and multimedia  integration. You get your own email address to post through and the microblog function gives you 1,000 characters and there's a blog platform as well. Beyond joining up recently and adding some Twitter  friends, I've done nothing with it. Worthy pursuing though, I feel.
iMacros for Firefox  - installed, running merrily away in the background of my browser. I do NOTHING with  it. I couldn't even remember what it was for, but as it was filed in my  'very useful' bookmarks folder so I'm pretty sure it is one I should  have a proper play with. Basically it does this: "It sits in your  Firefox toolbar, and lets you record tasks whether they  are oft-performed web development tasks, or simple tasks such as opening  a series of tabs you use each day". So it's a time saver - once I have  the time to use it.
Outwit - again, installed and sat at the top of my browser, a constant silent taunt to my inability to just 
knuckle down and learn how to use it.  Outwit trawls and collates content so you don't have to; download its  Hub (general content) Images or Docs and it dozens of data recognition  and extraction functions fitting in a Firefox extension.
TimeFlow Analytical Timeline  - a visualisation tool for temporal  data, it does everything from plotting  events over time on a  scrollable, horizontal timeline to allowing users to aggregate data by  headers in the data sets, offers various views and seems, in short, to  be useful.
The 
OS Open Space API - need I say more?
Maptube - for 
viewing,  sharing, mixing and mashing maps online. I did actually use this (at  least a year ago) and it is NOT complicated. But it does suffer from not  being something I particularly connected with and so I forget it's  there as a content creation option. Again, one for a project I guess.
deviantART Muro - Digital drawing programme that also has collaboration options built in. Loved this when I did a quick test but never went back to try it again. Must go back and explore further. 
Simile - In terms of welcoming the new user, a site with the sub-heading Semantic Interoperability of Metadata and Information in unLike Environments is not exactly reaching out with open arms to love you. But wait! there's more; Simile also "s
eeks to enhance inter-operability among digital assets,  schemata/vocabularies/ontologies, metadata, and services. A key  challenge is that the collections which must inter-operate are often  distributed across individual, community, and institutional stores. We  seek to be able to provide end-user services by drawing upon the assets,  schemata/vocabularies/ontologies, and metadata held in such stores".  On reflection, I now know exactly why I saved it but never did anything  with the site. However, it is a really useful repository of myriad  applications and addons, so I will be revisiting it in the future. With  my dictionary. 
Soup - blog/aggregator/pinger. On  revisiting it now, I don't understand why some people rave about Soup; still, at  least that's one I don't need to worry about finding the time to learn  more about. Unless you know differently? 
Socialmarker -a pan-site tool for adding web pages to  social bookmarking and social news sites. There is a Firefox addon but  since mine currently include Share on Posterous (occasionally used)  Share on Tumblr (rarely used) Import to Mendeley (never used) and Share  on Cliqset (used once to test) I don't think it's going to make any  difference if I add it. However, I do think this is a site worth me  spending a bit of time using before I decide whether or not it's a  keeper.
Stripgenerator - (below) used it 
once twice,  loved it. Never had sufficient time or wit to return - but I still think  it's a great site and one I should use more. Ditto 
Xtranormal.
* The quote is, of course, Douglas Adams.