world-shaker:

10 Ways to Archive Your Tweets
Here’s one:

2. Twapper Keeper: Archive Tweets Based on Hashtags

Twapper Keeper is an online  tool which archives tweets based on a given hashtag. Once you set up a  query, Twapper Keeper will periodically scan Twitter for that tag and  then archive the tweets it finds on its own servers. Tweets are scanned  approximately every 5 minutes but that can vary based on the velocity of  the incoming tweets. Once archived, you can then organize the tweets  into categories of your choosing which show up on the right-hand side of the archived page.
(via 10 Ways to Archive Your Tweets)

world-shaker:

10 Ways to Archive Your Tweets

Here’s one:

2. Twapper Keeper: Archive Tweets Based on Hashtags

Twapper Keeper is an online tool which archives tweets based on a given hashtag. Once you set up a query, Twapper Keeper will periodically scan Twitter for that tag and then archive the tweets it finds on its own servers. Tweets are scanned approximately every 5 minutes but that can vary based on the velocity of the incoming tweets. Once archived, you can then organize the tweets into categories of your choosing which show up on the right-hand side of the archived page.

(via 10 Ways to Archive Your Tweets)

I remember a while back reading some posts (on several tumblrs) about flickr losing many photos that one man had stored online.  People were amazed that they had no back up system.  Well, I present to you backupify which backs up / archives flickr, gmail, twitter, and facebook.

Thanks to Dianne’s Digital Discoveries for this link.