I started using mention (https://en.mention.net/) which I came across on HN itself and I must say I'm really satisfied with it.
I use it mainly for alerts about apps and services I develop and it does a good job of alerting me whenever someone mentions it on websites as well as in tweets etc.
I'm co-founder and lead designer at mention. I'll be glad to hear you tell us more about your experience. Can you send us an email at support@mention.net?
We're currently working on the new version and first experience is one of our priority.
Its been a while. Let me try to remember... One thing was that at some point in the signup process it kicked me to another domain. erwaehnung.de or something. First it felt like i was tricked into something. Then I thought "ok, some ugly SEO stuff" and was a bit annoyed.
The other thing was that after signing up, I was not logged in. Since I already forgot my password (put in some crap) i had to use the reset-password thingy.
I remember, that later I had some problems adding keywords. I dont know why anymore, sorry.
I have to say, that your service is good. Only the ui was annoying.
I use it mainly for alerts about apps and services I develop and it does a good job of alerting me whenever someone mentions it on websites as well as in tweets etc.