good questions.. both of them

Every upvote will deplete it (so you have to stop upvoting until it gets over 90 and closer to 100)

and no, can't boost it at all... It is all based on a clock that everyone operates on (big and small)...

Bonus answer too: its actually a GOOD thing because it forces you to write in words rather than upvote your thoughts... That is actually more valuable to you and will gain you new friends and followers and yes even money if they like your comments... I have made so much more money on the comment than on any of my posts.

So give up the crutch of upvoting for 2 and a half days and focus on writing lots of comments... And then let me know how it worked out ;)