How to extract and convert images/photos exif GPS metadata to decimal format with exiftool?

I use the great ExifTool by Phil Harvey to extract GPS metadata from images.
The default output for GPS coordinates is styled liked this:
GPS Latitude                    : 48 deg 50' 47.01" N
GPS Longitude                   : 8 deg 35' 21.83" E

I wanted the GPS data formatted in decimal number style.

How i fixed it:
Run the exiftool with the commandline parameters -n -c %.8f and you get

GPS Latitude                    : 48.8463925
GPS Longitude                   : 8.58939861111111

I found the right hints here:
http://u88.n24.queensu.ca/exiftool/forum/index.php/topic,6176.msg30496.html#msg30496

ExifTool download and forum can be found here:
http://www.sno.phy.queensu.ca/~phil/exiftool/

How to convert RGB images to CMYK colorspace with GIMP or ImageMagick freeware tools, using dedicated icc color profile for upload to online printing service like flyeralarm, saxoprint

I don't have Adobe Photoshop and Publisher 2013 does not Export CMYK Images. I wanted to send an Image to be printed to an online printing service (flyeralarm). They required the image the to be a jpeg, tif or PDF with images in CMYK color space using the  „ISO Coated v2 300 % (ECI)“ color profile.

How-I-fixed-it:
I found a couple of ways, how to convert my RGB jpeg image to CMYK colorspace:

1. Using GIMP
There's a plugin for the (great!) open source freeware GIMP (GNU Image Manipulation Program), which is called separate+ and can be found here. Download it and copy the required files to your GIMP Plug-Ins folder. You also need the ICC Color profiles, which can be downloaded from Adobe here. Copy the profiles to C:\Windows\System32\spool\drivers\Color
After that, GIMP color management allows you to select the desired Profile.
There's a much more detailed description here (in German).

2. Using the "convert" tool of ImageMagick
Install ImageMagick on your computer.
You also need the ICC Color profiles, which can be downloaded from Adobe here. Copy the profiles to C:\Windows\System32\spool\drivers\Color

Using the command line type
convert sourcefile.jpg -profile Path_to_color_profile.icc outputfile.jpg
or, if you want a PDF:
convert sourcefile.jpg -profile Path_to_color_profile.icc outputfile.pdf

The detailed description can be found here (in German).

3. There are online Services that do the conversion for you:
http://www.rgb2cmyk.org/
http://www.cmykconverter.com/

How to convert an excel table to a wiki table?

I was looking for a simple way to create a wiki formatted table from an excel table.
How i fixed it?
I found this tiny website that does exactly what i was looking for, the Copy & Paste Excel-to-Wiki Converter:
http://excel2wiki.net/index.php