How to add border to photos using gimp?

By script-fu method:
1. Open/Load the image to which you want to add the border into gimp
2. Click on Filters -> Decor -> Add border -> Give X,Y(breadth,width) value & select the color -> OK
Note:  This method will increase the dimension of the existing image by the value you given in X,Y value.  To repeat/increase the border size use ctrl+f
3. You can add other border types like Fuzzy border which is available in the same menu as above

By shrink & layer method:
1. Open the image in gimp, select the full image ctrl+a.
2. Shrink the image using Select -> Shrink
3. Create a new layer with default dimension by Layer -> New Layer
4. Invert the selection by Select -> Invert or ctrl+i
5. select the paint bucket tool, select either color or pattern, then click on the border region
Note: This method will shrink the visibility of the original image dimension by the value give in shrink.

How to add/edit email signature in gmail/yahoo?

Email signature:
As per wikipedia Email signature is,
"An e-mail signature is a block of text appended to the end of an e-mail message often containing the sender's name, address, phone number, disclaimer or other contact information."

Add/Edit Email signature with gmail:

gmail-settings

1. After log in into you gmail account click on the  gear wheel symbol(at right top) -> settings -> General tab -> signature block
2. Input your signature block text & save
3. To check click on compose -> the new message will show the signature you just gave.



Add/Edit Email Signature with yahoomail:
1. After log in into your yahoomail account click on options(at top left) -> mail options -> signature
2 & 3 are same as in gmail.