I get notified by email whenever somebody posts a comment to my journal, or a followup to a comment I left in somebody else's journal. I'm not sure whether it's a paid feature or not, but look under user settings.
Ah, I cannot use that option since I lost my email account. I guess I'll have to go back and scan my history manually in keeping with the "unconsidered life" and all that. ^_^
Re: How can you tell
Re: How can you tell