Education costs money. Ignorance costs more.
Harsh! Though accurate in this case. ;)Altmetric only started collecting data in July '11 so hits are pretty sparse before then. Legally / practically speaking access to many data sources (inc. Twitter and news stories) are pretty ephemeral and I can't easily backfill the database.On a side note this is why Altmetric doesn't have any researcher CV type tools - the coverage on older papers wouldn't be particularly good.If you try it on recent stuff and it misses relevant links def. let me know. Really there should be some sort of feedback mechanism in the bookmarklet itself, I guess...
Thanks for the information.It would be worth flagging the lack of retrospective coverage so people aren't disappointed (as I was in this case).
Yeah, that's a good idea. Will make some updates to the page to make it more obvious.