I’ve been saying this for months, initially for the simple reason that Twitter needed help scaling up to the ever-increasing loads with a partner that is expert at these kinds of issues, as well as things like pre-existing integration with Google IM (which was taken out because of the load/stability issues), etc.

Now that Twitter Search has emerged as one of the killer apps pertaining to Twitter, it becomes even more relevant: You may have noticed that Twitter Search would at certain heavy-load times of the day allow search results to only go back 7 days. Which could become really frustrating when trying to easily retrieve older tweets.

With full backwards range, Twitter Search can become e.g. one’s primary bookmarking tool, since the Tweets are embedding tons of tag-like markers with the links, if not outright #hashtags, to create context more naturally/with less effort than other (social or not) bookmarking solutions.

But to make this viable/trustworthy, full backwards queriability has to be maintained (at an absolute minimum of one’s own tweets). So having search on a industrial-strength footing like Google can obviously provide is massively important.

Now obviously Google wants their hands on the real-time search aspects, and thankfully ultimately likely wouldn’t have to try quite as frantically to monetize Twitter, as long as the acquisition can preempt competitors. I was getting a little worried that Twitter might have to sell too much of its soul to e.g. corporate data miners, which could have proven another reason to cut off search past 7 days back.

Interestingly, if Microsoft doesn’t preempt this deal, they are missing out on maybe their last chance to disrupt Google in search. Of course there may be just too many barriers to the acquisition, as MSFT would likely want to move Twitter’s infrastructure to Windows servers, asf. which would likely be a disaster.

And would have a heck of a time explaining an acquisition to their already “not-amused” (by the Micro-hoo saga) stockholders.