Here’s one from the “I could have used this a fair few times” category. Favorite blog of mine MakeUseOf details three ways to reset a Windows administrator password if it has been forgotten due to Administrator Dumbass-ery (its a real word ’cause I say it is).
Definitely the sort of thing to bookmark for posterity.
3 Ways to Reset a Forgotten Windows Admin Password at MakeUseOf

I love my MacBook, I really do. I haven’t regretted buying it for even a moment. But lately, like a newlywed couple after the honeymoon is over and the bills begin to roll in, I’ve noticed one or two of my MacBook’s annoying little quirks.
Arguably, the most annoying of those quirks is the startup chime that is impossible to shut off. Most of the time it is no big deal to just ignore it, but when I’m trying to nerd out in the wee hours of the morning without leaving the side of the SO–still sleeping soundly in bed, well, you can imagine how not easy to ignore that stupid chime is.
Enter Psst. Psst does one thing, it silences that chime, both effectively and without announcing itself in any way. And really, what else does an effective application need to do.
Psst does not work with every Mac, but when it does, its great. Its running on my MacBook now, with no sign of going away.
Psst

Text messages are a great way of communicating small, often pointless bits of information back and forth using a phone, without talking. A niche area of usefulness to be sure, but one that I heartily subscribe to.
Still, I’d love my texts to do more, without having to pay more than my far-too-expensive text and minutes plan already costs me. Perhaps, texts could even earn their keep by being useful for something other than finding out what the SO is doing while I’m at work. So I began a search to find useful, free things to do with text messages. This is what I dug up:
Kwiry
Kwiry is cool, if only for the breadth of things that you can do from your phone after a few quick steps to register. Send yourself an email, add movies to your Netflix queue (a particular favorite of mine), update your Twitter and Facebook statuses, set shows to record to your Tivo, and about a quarter-ton of other features.
Google SMS
Search with Google via text message. Check prices, find someplace to eat, all within your preset location, or one you define. Put on the over dramatic voice with me: The power of Google is in your hand!
Twitter
This one may be elementary, but there’s really no better way to make use of well-known microblog Twitter than to use your phone to give a play-by-play of your life from where ever you are.
Fandango SMS
Need to know the time a movie is playing, just text movie tickets service Fandango with the movie name and your zip code and get a message back with showtimes. Alternately, text your zip code only to get a list of times all movies are playing.
Cha Cha
Want to know the answer to a question, any question. Text it to Cha Cha and a real-life person will search for the answer and reply back within a few minutes. Seriously.