What encourages companies like Blockchain in development of tools for programmers, for exemple, get bitcoin difficulty, or number of transactions per day....what do they win? I google it, and I found someone saying that blockchain makes money by charging merchants and large transactions at 0.1%. Is that true?

I want to link my Bitcointalk name with BTCJam's. Verification code: effb3d4b-5aa4-4369-a9a5-d3d817b9259a

Hey guys!!! I'm learning java in college and I decided to try to make some changes on multibit client UI. Well I downloaded the code from multibit website and put everything in a "src" directory on a Netbeans project. However, I notied, that some libraries are missing, for example:

import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.type.TypeReference;
import org.spongycastle.crypto.BufferedBlockCipher;
import org.spongycastle.crypto.CipherParameters;
import org.spongycastle.crypto.PBEParametersGenerator;
import org.spongycastle.crypto.engines.AESEngine;
import org.spongycastle.crypto.generators.PKCS5S2ParametersGenerator;
import org.spongycastle.crypto.modes.CBCBlockCipher;
import org.spongycastle.crypto.paddings.BlockCipherPadding;
import org.spongycastle.crypto.paddings.ISO10126d2Padding;
import org.spongycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.spongycastle.crypto.params.KeyParameter;
import org.spongycastle.crypto.params.ParametersWithIV;
import org.spongycastle.util.encoders.Base64;
import org.spongycastle.util.encoders.Hex;

Have I downloaded from the wrong place or  these libraries aren't distribute with multibit code? Should I try to find these libraries online?

Thanks in advance.

Ernani