I liked this tip:

Add Emphasis in Chat

Gmail’s instant messaging Chat function is one of the more basic options around, but there are a few bits of formatting you can use to add nuance to your online communication.

To bold a word, asterisk it like this: *Mashable*

To add italics, just underscore before and after the word like this: _Mashable_

And to strike a word through, add hyphens before and after like so: -Mashable-

and this tip:

Create Variations of Your E-mail Address

Although technically you only have one Gmail address, you can create as many variations of it as you wish to help manage your incoming mail.

You can do this by adding a word after your name with a plus sign (if the site you’re entering the address into allows it). So, yourname+newsletters@gmail.com, yourname+shopping@gmail.com, and so on.

This alias system then comes into its own if you also set up filters to direct those messages where you want them. For example, they could skip the inbox and be archived, have a label applied, be forwarded to another account, and so on.

To set up a filter, go to “Settings,” hit the “Filters” tab, select “Create New Filter” and follow the simple steps from there.

The original post can be found here.

This service allows you to watch and listen to Flash-based videos without the need to Flash technology. This gives you speed, safety, control, freedom and openness.

Sprixi site is one of the best search sites for free photos. It is very fast and provides high quality images and clear distinct from the rest of the other search sites, the site draws Sprixi search results from Flickr pictures and OpenClipArt.org and other sites that allow image review and upload .

This is another un-social networking solution which is focusing on deleting your data and friends from the famous social network Facebook. I think we are witness of a new wave of revolting people who really care about the privacy and social values in the real world.
Seppukoo means in Japanese “let’s make suicide”. I don’t understand this tendency to use such shocking words which I think are not adapted to the situation or the goal of the service. In the blog we presented “suicide machine” and now Seppukoo.
It is a kind of strange to find the same meaning and the same message in these two services. I hope that people don’t take the message as it is and misunderstand that it is a suicide in the virtual world or internet and it does not have any relationship with the real world.

PS: Thanks to Karim for drawing my attention to this service.

This online service is very useful for people who need complex symbolic mathematics operations.