I Just hit 70 days logged in !
Congratz, you got all 70 days "naturally" or you used auto refreshing ad on from chrome or firefox
?I don't really think that the forum timer can be exploited by that...
You can exploit log time, But there is not really good point in doing so. Only stats that is really meaningful is activity, and you can't toy with it.
...! 70 days congrats 
... my Total time logged in counter says 23 days, 4 hours and 9 minutes. as of now..! so a long journey ahead ..! I'll create a thread like this on completing 100days 