1. Enable font smoothing
You are at the computer from the 90th year, your retina was deformed, and you turn off font smoothing even in Windows 7. But for God's sake, before taking a screenshot, turn on anti-aliasing,




.
2. Place more useful information per unit area.
You have a huge 30 inch monitor with a standard resolution of 2560 × 1600 pixels. You love it very much, and you want any netbook user to feel how lucky you are. But please, when you take screenshots, expand the window that you want to show people. Do not allow this:

Especially when you just need to show one menu item:
')

3. Remove all unnecessary
You have a great picture on your desktop. Or cool background with a wheelbarrow at each folder in the explorer. I bet your reader will not wait for you to show them all this. The problem is that the parts of the photos that fall into the "frame" greatly increase the size of the png-files.
4. Yes, png-files
Understandably, you are on your favorite Nikone figachite 50 photos a day and he saves them in jpeg. Now this format is for you as your own. But take pity on the readers, let them read the text, not

from jpeg.
All these rules are very simple. Simple not because they are easy to follow, but because they are easy to open yourself, thinking about how best to convey information from the screen. And now you have the opportunity to follow them blindly, without even thinking. Use it, please.
Added much later:And why not arrange a board of shame for fifth graders right here? In parentheses are the numbers of violated rules.
habrahabr.ru/blogs/personal/102385 (2, 4)
habrahabr.ru/blogs/hosting/110708 (2, 3)
habrahabr.ru/blogs/pm/110643 (2, 4)
habrahabr.ru/blogs/humour/110817 (
4 in a particularly cynical form, jpeg is re-stored in png)
habrahabr.ru/blogs/google_chrome/110816 (
2 )
habrahabr.ru/company/croc/blog/110836 (4)
habrahabr.ru/blogs/GMail/110915 (2, 4)
habrahabr.ru/blogs/ps3/110945 (
4 in a particularly cynical form, jpeg is re-stored in png)
habrahabr.ru/blogs/skype/111032 (
4 in a particularly cynical form, jpeg is re-stored in png)