Grayson,
You pose some interesting points to ponder. I suggest that the alternative to this site be the Yahoo group site because, as you said, the bill for this site should be comming up fast.
As for LinkedIn itself, I'm afraid they've committed social network suside and just don't realize it yet. For me the end became clear the first time I was restricted because of IDKs and reinforced when the site form and function begin to change for the worse. The icing on the cake arrived with the group affiliation limit.
I've downloaded my contact list and intend to keep my network alive in some fashion. we'll just have to see what the future holds. (Please pardon the spelling errors)
Regards,
Dan Light
dan@danlightdirect.com
www.danlightdirect.com