Thanks for the complements and glad you like the site.

T-SQL Tuesday is the second Tuesday of every month, and there's a different host every month. There's a Twitter hashtag of #tsql2sday to follow as well.

#sqlrun is for the runners in the SQL Server community. We had about 40 of us go for a run one morning at the PASS Summit, and a few of us have run at other events as well.

#sqlfamily is kind of a personal bonding tag. Random stuff there, but all good.