[lsc]

Might I suggest a free account that is limited to email alerts? It probably wouldn't cost you much, and it wouldn't cut into your 'business class' business... but it'd be a nice way for small timers to get a taste of your service monitoring their personal stuff (and then maybe recommend it to the boss)

[btilly]

I'd guess that anyone who needs to receive text messages already knows about the email to sms gateways that their phone carriers provide.

[koenigdavidmj]

But you don't really need this service for that. Nagios sends directly to those (just like any other email address).

Of course, the two-way SMS that lets you wake up the other guys if needed would break under this.

[lsc]

yeah, and many people disable those due to spam problems.